PDF malware analysis — malicious · ef1d2db31a65abbe

MALICIOUS

PDF

49.3 KB Created: 2021-06-11 00:26:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 192304b229a7d50f644cc68dcd631697 SHA-1: a7f72f83dc89037e4c72c02fc672f11a4ed07325 SHA-256: ef1d2db31a65abbeb127962524b3d71ad7bf5312b224528bdd74dbfdc185a539

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links to external websites, many of which are structured as SEO-optimized PDF links, suggesting a link farm. The document body and embedded URLs indicate a lure related to "Roblox hacks," likely intended to trick users into downloading malware. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

Nyx PDF Classifier malicious score 0.9796

Heuristics 4

Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
External URI info PDF_URI

PDF contains an external URL action
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL https://netcdn.tw/app/431946152/roblox-developer-console-hack-game-hack
- https://sanjoseelectricians.net/images/how-do-u-get-free-hair-on-roblox_GM431946152.pdf
- https://sanjoseelectricians.net/images/comment-hacker-jailbreak-sur-roblox-2021-mops-games_GM431946152.pdf
- https://sanjoseelectricians.net/images/how-to-become-a-roblox-hacker-free-on-pc_GM431946152.pdf
- https://sanjoseelectricians.net/images/does-john-doe-hack-roblox_GM431946152.pdf
- https://sanjoseelectricians.net/images/roblox-hack-script-download_GM431946152.pdf
- https://sanjoseelectricians.net/images/free-multiplayer-games-like-roblox_GM431946152.pdf
- https://sanjoseelectricians.net/images/denisdaily-hacking-in-roblox_GM431946152.pdf
- https://sanjoseelectricians.net/images/free-roblox-codes-that-work_GM431946152.pdf
- https://sanjoseelectricians.net/images/roblox-hack-unlimited-free-robux-tickets-no-survey_GM431946152.pdf
- https://sanjoseelectricians.net/images/how-get-free-robux-on-pc_GM431946152.pdf
- https://sanjoseelectricians.net/images/how-to-be-thanos-in-roblox-for-free_GM431946152.pdf
- https://sanjoseelectricians.net/images/groups-in-roblox-that-give-you-free-robux_GM431946152.pdf
- https://sanjoseelectricians.net/images/roblox-zombie-rush-free-online_GM431946152.pdf
- https://sanjoseelectricians.net/images/roblox-kill-aura-hack-booga-booga_GM431946152.pdf
- https://sanjoseelectricians.net/images/how-get-a-free-roblox-group_GM431946152.pdf
- https://sanjoseelectricians.net/images/how-to-hack-on-roblox-games-2021_GM431946152.pdf
- https://sanjoseelectricians.net/images/roblox-games-for-free-unblocked_GM431946152.pdf
- https://sanjoseelectricians.net/images/indidojoe-robux-hack_GM431946152.pdf
- https://sanjoseelectricians.net/images/roblox-apocalypse-rising-spawn-hack-2021_GM431946152.pdf
- https://sanjoseelectricians.net/images/how-to-get-free-tshirts-roblox_GM431946152.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00005387.bin` `8523b9ca7dcb6184720ea68da7cfb7272b355932a05b5fe8a9a4cbb286acc87f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5387	25920 bytes
`font_01_sfnt_off00008fe0.bin` `450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8FE0	5696 bytes
`font_02_sfnt_off00009cf1.bin` `fd7da7a47b8d1bb834b06922a7f294e92ef33ee5ee3ae814209d4c816b488251`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9CF1	18640 bytes

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